Which of the following could be illegal? a. not petting and interacting with an animal b. performing medically unnecessary surgery on an animal c. euthanizing a healthy animal d. not providing an animal with food and water

B. Performing medically unnecessary surgery on an animal  

Using an animal for surgery or medical purposes to create a medicine or treatment method is not illegal but if medically unnecessary surgery of an animal is performed it is insane and cruel and is considered as illegal.

C. Euthanizing a healthy animal  

Animal euthanasia is the act of putting an animal to death or allowing it to die by withholding extreme medical measures. Reasons for euthanasia include incurable conditions or diseases, lack of resources to continue supporting the animal, or laboratory test procedures. But if a healthy animal is euthanized without these conditions then it can become illegal.

D. Not providing an animal with food and water

Not providing with food and water, an animal can die and it is cruel act therefore it is also illegal.

it's false.

"every person has their limitations which prevent us from accomplishing something. some are better than mathematics for example and some are worse. those people who are worse might never be able to become mathematicians, but that does not mean that they would not be great at doing something else."